Razor



Sept. 15, 1931. R. J. HODGE RAZOR Filed Dec. v, 1929 HUBER-r J. HEDGE Patented Sept. 15, 1931 K j UNITED STATES PATENT OFFICE J. HODGE, 013 WEST HAVEN, COhTNEGEIlICUT nazoir'b v Appl icationpiiled December 7, 1929. SeriaIN 'o. 412,555.

This invention relates toraz ors and more supported, the blade having an elongated particularly to the type of safety razors perforation into which is received'the eccenemploying means for producing a relative trio extremity to impart to the bladea recipmovement between the blade and its holder. rocating motion,-'but, the manner in which The objects of the invention are toprovide the rotatable shaftengages its eccentric ex- 55 a safety razor with a novel'meansfor reciptremity'with the blade, perforation being an rocating theblade relative to the holder; important feature of novelty of the invento provide, for association with such novel tion, itis immaterial in the broad sense what means, a series of blades of which the strucmeans may be employed to impart moveture of each predetermines the direction of ment' to the ;rotatable shaft. so

the reciprocating movement of the blades; Referring more" particularly to the drawto provide, as a part of such novel means, ings, the device comprises the hollow stem 1 symmetrically spaced blade-reciprocating serving as a handle and fixedly supporting members; and to provide a simple mechanthe casing 2 having the stationary plate 3 ical means for imparting motion to the and the detachable plate or section 4. The-o5 blade-reciprocating members, the invention casing 2, as illustrated by the Figures 5 and consisting in the novel constructions, to be 8, is a box-like structure of which the rectanhereinafter described or claimed, for carrygular stationary plate 3, best illustrated by ing out the above stated objects and such the Figure 7, is the cover having the downzo other objects as may hereinafter appear. wardly bent ends 5, illustrated in dotted lines 70 The character ,of the invention may be by the Figure 7 and in cross-section by the best understood by reference to one 'illustra- Figures 5 and 8, and setting within and rivtive device embodying the invention and ileted to the end portions 6 of the casing. The lustrated by the figures in the accompanying longer sides of the stationary plate 3-a-re each 5 drawings in which the Figure 1 is a front provided with guard-teeth 7, and the top surelevation of the full device; the Figure 2 face of the plate 3 is provided with the is a side elevation thereof; the Figure 3 is a substantially rectangular central projection top'view thereof; the Figure 4 is a cross-sec- Shaving a plurality of parallel side walls tional view of the top section of the device; and having the'tapped bore 9, the plate 3 the Figure 5 is a front elevation of the dealso having the spaced bores 10 and the larger 30 vice with the top section removed and the spaced bores 11, as illustrated by the Figure casing and the handle illustrated in cross 6.. The floor 12 of the casing 2 is provided section to expose to view the interior parts; with a central borel3 communicating with the Figure 6 is a view of the underside of the the interior of the stem 1 the floor 12 bein 3 top'section; the Figure 7 is a top view of the also provided with the spaced bores 14 an ,85' device with the top sect-ion removed; the Figthe spaced bores 15 in axial alignment with ure 8 is a similar view ofthe device but ilthe spaced bores 10 and'the spaced bores 11, lustrating the casing in cross-section to exrespectively, as illustrated by the Figure 5. pose to view the interior parts; and the Fig- Within the casing 2 is the gearing compris- 0 ures 9, 10, and 11, are plan views of razoring, first, the large gear wheel 16 fixed to 90 blades in series. the shaft which engages the central bore 13,

The invention is not limited to any specific the shaft also carrying the disk 17 fixed thereform of construction and the details of the to and occupying a position within the stem device may be varied to produce the novel ,1; second, the small gear wheels 18 and 19 features hereinafter claimed. The device as intermeshed with the gear 16 and each fixed 95 illustrated however includes a spring-actuto a different one of the shafts engaging the ated geared mechanism for rotating a shaft: spaced axially aligned bores 10 and 14, representing an eccentric extremity projectspectively; third, the large spaced gear ingabove the surface of a stationary plate wheels 20 and 21 respectively fixed to the upon which the razor blade isguidingly :shafts of the small'gears 18 and 19; and 4,

fourth, the lantern wheels 22 respectively intermeshed with the gear wheels and 21, each lantern wheel being provided with a shaft at its lower end engaging one of the spaced bores 15 in the floor 1,2,of the casing 2 that are in axial alignment with the larger 23 is to its shaft, as illustrated-by the Figures tension to maintain the knob 26 within the 'free end of the stem 1, as illustrated by the i so Flgure 5. The detachable plate 4 has an un- 5 and 7. The free end of the hollow stem 1 has its annular edge provided with the ratchet teeth 25. A knob 26 is provided with a reduced inner end 27 forming a shoulder provided with the ratchet teeth 28 for interengagement with the teeth 25, the reduced end 27 being rotatably fitted within the free end of the stem 1. Both the disk 17 and the reduced end 27 are provided with a hook element 29 for engagement by the opposite ends of a coiled spring 30 exerting a contracting der surface 31 provided with a central rectangular depression 32 provided with a tapped bore extending through the plate, the

under surface 31 also having the spaced -an-' nular depressions 33 and the feet 34. The outer-surface ,of the plate 4 has a central an-' nular depression 35 surrounding the tapped bore 37 for the accommodation of the coiled spring 36, the bore 37 accommodating the thumb-screw 38 having a shoulder against which the spring 36 exerts a tension, as illustrated by the Figure 4. The blades 39. 40,

and 41, each has a central perforation 42 of substantially rectangular form, but of varied long and short diameters, and they also have spaced elongated companion slots 43, 43A, and 43B, respectively, the central perforation of each blade being differently shaped and the slots of each blade extending in a different direction, as illustrated by the Figures 9, 10, andll, the razor is thus provided with a blade seri'esfor a purpose to be directly explained.

In operation, the blade 39, for instance, having the longer diameter than that of the projection 8, is placed upon the stationary plate 3 so that both of the longer sides of theperforation,42 fit over and simultaneously engage against the longer sides of the pro- Jection 8 for a relative sliding movement, and the spaced longitudinal slots 43 each' receive an eccentric extension 24 of anenlarged shaft 23. The detachable plate 4 is then placed over the blade so that the rectangular depression 32 fits over and is positioned by the projection 8, the spaced annular depressions 33 axially registering with the enlarged shaft 23 and allowing a limited freedom of movement therein of the eccentric extensions 24, as the feet 34, engaging marginal portions of the stationary plate 3, maintains a spaced relation of the detachable and stationary plates. The thumb-screw 38 is then screwed into the tapped bores 37 and 9 and down against the end of the shaft of the large gear wheel 16 to hold the shaft against rotation. The knob-26 is then relatively turned clockwise as regards the free end of the stem 1, the inter-engaging ratchet teeth of both stem and knob permitting a step by step rotary movement -of the knob within the stem and against both axial retracting and winding tensions of the spring 30; The spring 30 being thus wound up, the thumb-screw 38 is slightly loosened to release the geared mechanism, the spring 36 maintaining the detachable plate 4 in close engagement with ,the stationary plate 3. The mechanism responding to the tension of the unwinding 9o spring immediately operates the enlarged shafts 23 which in turn operate the eccentrlc extensions 24 rotatingly within the slots 43 of the blade 39. The slots 43 being too narrow to include therein the radial sweep of the eccentric extensions 24 the blade is thereby reciprocated along the short axis of the slots and over the stationary plate 3 toward and awayfrom the toothed edges of that plate, the central projection smoothly guiding such movement of the blade. Should a longitudi- -nal reciprocating movement of a blade be desired, the second blade 40 of the blade series -may takethe place of the blade 39. The

blade 40, having a shorter but wider perfom5 ration than that of the blade 39, is placed upon the stationary plate 3 for simultaneous engagement of both of its short sides of the perforation 42 with the short sides of theprojection 8. the spaced transverse slots 43A each receiving an eccentric extension 24 of an enlarged shaft 23. By meansof the rotatin g eccentric extensions 24 within the slots 43A the blade is reciprocated in the manner above explained, but in a longitudinal direction; for the movement of the blade must be along the short axis of the slots. Other blades, as for instance the blade 41, may be included within the blade series to be reciprocated, relative to the stationary plate 3, in other directions, the oblique slots 43B and the oblique corner edges 44 of the central perforation 42 of the blade 41 being adapted to simultaneously andslidingly engage diagonally opposite oblique walls 45 of the projection 8, The blade thus provides two additional blade-reciprocating directions, the

particular direction of the reciprocating movement of the blade 41 depending upon slots.

, tangular plate of which the parallel longer which side surface of the blade is placed against the stationary plate'3.

I claim 1. A raz'or comprising a stationary recthe blade; a detachable plate spaced from and detachably secured to the stationaryplate and overlying the mounted blade; and

means for imparting a reciprocating movement to the blade along the short axes of the slots, the means comprising rotatable shafts having ends j ournaled within bores provided by the stationary plate concentric with the centers of the axes of the slots of the mounted blade, both shafts having eccentric extensions each engageable within a slot of the blade to move the blade along the short axes of the 2. A razor comprising a stationary rectangular plate of which the parallel longer edges are provided with guard teeth; a central blade-guiding projection provided by the .plate, the projection having a plurality of opposing parallel side walls; a blade provided with a blade-guiding central perforation having opposing parallel edges for sliding engagement with certain of the parallel walls of the projection; companion slots provided by the blade, each slot having long and short axes having a common center spaced equidistant from the center of the'blade'; a detachable plate spaced from and detachably secured to the stationary plate and overlying the mounted blade; and means for imparting a reciprocating movement to the blade along the shortaxes of the slots, the means comprising rotatable shafts having ends journaled withinlbores provided by the stationary plate concentric with the centers of the axes of the curing means of the ing central perforation having opposing parallel edges for sliding engagement with certain of the parallel walls of the projec tion; companion slots provided by the blade,

,each slot having long and short axes having a common center spaced equidistant from the center of the blade; a detachable plate spaced from and detachably secured to the stationary plate and overlying the mounted blade; and mechanism for imparting a reciprocating movement to the blade along the short axes of the-slots, the mechanism comprising rotatable shafts having ends journaled within bores provided by the stationary plate and the box structure axially concentric with the centers ofthe axes of the slots of the mounted blade, both shafts having eccentric extensions. each engageable within a slot of the blade, the shafts being apart of a geared connection provided within the boxstructure and actuated by a coiled spring provided within the hollow handle with one spring end connected with and maintaining a rotatable knob mounted upon the free end of the handle, the engaging faces of the handle extremity and theknob having ratchet-teeth formationfor interengagement, and the seplates providing a detent to the mechanism.

ROBERT J HODGE.

slots of the mounted blade, both shaftshav-,

ing eccentric extensions, ,each engageable with a slot of the blade, the guiding means of the stationary plate and the radial position of the slots of the mounted blade cooperating walls; a blade provided with a blade-guid- 

